Look up: compulsory

1. 
   compulsory
   [Adjective] Something that has to happen or that you must do.
   Example: The exam was compulsory. Gill had to take it to pass the course.
   Found on http://www.bbc.co.uk/skillswise/glossary
   
   
2. 
   compulsory
   [adj] - required by rule
   Found on http://www.webdictionary.co.uk/definitio
   
   
3. 
   compulsory
   a stop at which all vehicles or trains are required to stop with a specific request from waiting passengers Category: Transport • a field for which a value must be entered in order for the record to be valid Category: Automation (includes telecommunications and computers) • the clause,introduced by the insurer,stating that the insured shall bear the first x pounds or the fi...
   Found on http://www.mijnwoordenboek.nl/definition
   
   
4. 
   Compulsory
   Com·pul'so·ry adjective [ Late Latin compulsorius .] 1. Having the power of compulsion; constraining. 2. Obligatory; enjoined by authority; necessary; due to compulsion. « This contribution threatening to fall infinitely short of their hopes, they soon made it compulsory . Burke. »
   Found on http://www.encyclo.co.uk/webster/C/125
   
   
5. 
   compulsory
   mandatory adjective required by rule; `in most schools physical education is compulsory`; `attendance is mandatory`; `required reading`
   Found on http://wordnet.princeton.edu/perl/webwn?
   
   
6. 
   Compulsory
   • (a.) Obligatory; enjoined by authority; necessary; due to compulsion. • (a.) Having the power of compulsion; constraining.
   Found on http://thinkexist.com/dictionary/meaning